给定多个512点的数组，分别对其进行fft显示其频谱特性并显示频率和幅度坐标（可以通过界面控件选择数组、设定采样时间）-Given an array of more than 512 points, respectively, show the spectrum of their properties for fft and display frequency and amplitude coordinates (you can choose an array of interface cont

基于快速傅立叶的二路工频交流采样256点采样分频率50HZ的源代码-Road work based on Fast Fourier frequency AC sampling point 256 sample source code of the sub-frequency 50HZ